About this role
Salary: £85,000 - 85,000 per year
Requirements
- Strong programming experience in C, including debugging, memory management, and system-level programming
- High proficiency with Bash scripting for automation, tooling, testing, and integration
- Deep understanding of Linux operating systems, especially Debian-based systems, system services, process management, permissions, and system administration
- Good knowledge of OpenSSL, both on the command line and programmatically, as well as X.509 certificates and PKI fundamentals
- Understanding of Linux security mechanisms, including seccomp, udev, and auditd
- Good knowledge of Linux privilege management, capabilities, access controls, and application isolation
- Strong understanding of secure software development practices, threat mitigation, and common security vulnerabilities
- Ability to take ownership, work independently, solve complex technical problems, and communicate technical concepts clearly
Responsibilities
- Develop and maintain secure, reliable software at the operating-system level
- Work across Linux security mechanisms, kernel-level hardening, and cryptographic technologies
- Apply security-by-design principles throughout the development lifecycle
- Develop robust, maintainable software using C, with Bash for scripting
- Contribute to technical design and code reviews
- Assess and strengthen the security of the Linux platform, including in-depth work with OpenSSL, X.509 certificates, and PKI
Technologies
- Bash
- Debian
- Linux
- Security
More
We are a successful, expanding software house providing cybersecurity products to companies in finance, government, defence, law enforcement, and pharmaceuticals. This newly created role joins our core Linux team and supports our work towards Common Criteria certification. We offer a salary of up to £85k, 25 days of holiday rising to 27 after two years, the option to buy five additional days per year, private medical care, life cover, a pension, and subsidised gym membership.
The role is hybrid
you can work from home most of the time and meet with our international team at our Central London offices once a week.
last updated 46 week of 2026